89171928 has 80 divisors (see below), whose sum is σ = 251239560. Its totient is φ = 29548800.

The previous prime is 89171911. The next prime is 89171933. The reversal of 89171928 is 82917198.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 155883 + ... + 156453.

Almost surely, 2^89171928 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 89171928, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (125619780).

89171928 is an abundant number, since it is smaller than the sum of its proper divisors (162067632).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

89171928 is a wasteful number, since it uses less digits than its factorization.

89171928 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 830 (or 817 counting only the distinct ones).

The product of its digits is 72576, while the sum is 45.

The square root of 89171928 is about 9443.0889014136. The cubic root of 89171928 is about 446.7618207713.

The spelling of 89171928 in words is "eighty-nine million, one hundred seventy-one thousand, nine hundred twenty-eight".